Can a chest CT detect pulmonary embolism?

In general, whether a chest CT can detect pulmonary embolism depends on the type of CT performed. If it is a CT pulmonary angiography (CTPA), then pulmonary embolism can usually be detected. Otherwise, it may not be identified. The specific analysis is as follows:

Pulmonary embolism is typically a condition caused by a dislodged venous thrombus that travels to and blocks blood vessels in the lungs. When CT pulmonary angiography is performed, a contrast agent is injected intravenously before scanning. This allows clear visualization of the pulmonary blood vessels, including the location, size, and severity of the embolism. Pulmonary embolism can generally be diagnosed using this method. If a dark filling defect appears within the bright contrast-enhanced area on the CT image, this indicates a pulmonary artery embolism.

However, if only a routine non-contrast chest CT scan is performed, it typically enables observation only of the trachea, bronchi, and lung interstitium, and may fail to detect pulmonary embolism. While routine chest CT might reveal some indirect signs of pulmonary embolism, its primary utility lies in assessing the airways and lung parenchyma.

It is recommended that individuals suspected of having pulmonary embolism seek evaluation at a reputable medical facility to confirm the diagnosis and receive appropriate treatment. During treatment, maintaining a balanced diet is advised, along with moderate intake of protein-rich foods such as eggs and chicken, which may support recovery and promote overall health.